The main objective of this study was to examine the effects of selected factors on retention, graduation, and timely bachelor's degree completion at The University of Iowa. An additional purpose was to identify the stage-varying effects of selected variables. Reflecting the sequential nature of bachelor's degree completion, this study focused on three stages of students' progress to graduation: 1) dropout vs. persistence in the first year, 2) graduation vs. failure to graduate among first year persisters, and 3) graduation in four years or less vs. graduation in five years or more. We found that college academic performance, pre-matriculation academic achievement, and college major were the most important variables in explaining success at The University of Iowa. We also found fairly consistent results across the three models. 407